Floor-level stop for electrically-operated elevators



Feb. 13, 1923. 1,445,149

E. R. LEIGH FLOOR LEVEL STOP FOR, ELECTRICALLY Ol-DERATED ELEVATORS l Filed sept. 22, 1.917 5 Sheets-smet 1 @1L/9% i $4129.13. 2 2i v 7 Feb. 13, 19231 1,445,149 E, R. LEIGH FLOOR LEVEL STOP FOR ELECTRICALLY OPERATED ELEVATORS Filed sept. 22, 191V Feb. 13, 1923.'

l1,445,149 E. R. LEIGH FLOOR LEVEL STOP FOR ELEOTRICALLY OPERATED ELEVATORS Filed Sept. 22, 1917 3 sheets-sheet 5 VDatented Feb. 13, 1923.l

V'UNITED PATENT OFFICE.

.EDWARD R. LEIGH, OF PHILDELRIIA, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF TO r 'EDWARD W. DUGDLE, OF KEARNEY, NEW JERSEY.

.FLOOR-LEVEL STOP FOR ELECTRICALLY-OPERATED ELEVATORS.

Application filed September 22, 1917. Serial No, 192,649. T all iii/"wm 'it may concern: .Figure 8 represents a diagrainmatieal. 55

Be it known that I, EDWARD R. Laien, a vieiv of the motor and control circuits. citizen or' the United States5 residing in the Similar numerals of reference indicate city and county of Philadelphia, State of corresponding parts.

Pennsylvania, have invented a new and useheferring to the drawings ful Floor-Level Stop for Electrically-Op- .l designates the car or" an electrically op- 60 erated Elevators, o t' which the following is a erated. elevator and 2 designates thel Wall.

A specification. of the shaft in vwhich the car operates. 3

My present invention relates to electridesignates the floor level. -4 designates the io cally operated elevators, and in its broad controller switch which is provided with an and generic scope, consists of novel means actuating handle 5 mounted onv a shaft 6. 65

for automatically bringing the elevator car T designates a link fixed to the shaft 6 and yto the floor level when the ear stops a slight pivotally connected to a rod 8 which at its distance above or below the level of the other end is lpivotally connected to a bel] 1,5 Hmm i crank lever 9 which .is fulcruined at 10 to It further consists ot' a novel arrangement a. keyway ll. 70

of electric circuits which are open when the l2 designates a link pivotally connected ear. is running but which are closed when to one end of the bell crank 9 and with a the rontnollingg,f switch is in its neutral posi plate 13 carried by a key lli sliilable in the.

tion and the Car stops a predetermined dislqeyivay ll. which is fixed to the top of the tance above or below the level or" the floor. car l, in any desired manner. The plate 13 75 Other novel features. of constriirtionand has secured thereto in any desired manner advantage willv hereinafter more clearly air a contact carrying plate l5 of insulating,`

pear inthe. detailed description et iny iniiiateiial in ivliiehai'e mounted the binding` ventiou posts 1G, 17. 13 and 19 which extend through For the purpose of illistratinir my inventhe Contact carrying plate l5 and are adapt- 80 l tionL l .have shown in the acconipanyinnn ed to be moved into a position to Contact draivings a typical embodiment oit it which ivith a ivalleontact plate 2 0 which is secured is at present preferred .by ine. since in any desired manner with respect to the 3G embodiment will give iii o wall of the elevator shaft. This wall contorv and reliable results7 a .oiigzh it is to tact platepreterably has its upper and lower 85 be understood that the va iis insti-unici portions inwardly curved. The bell crank talitieS of which my .invention consists can lever 5) is preferably provided with a tenbe variously arranged and iii lnized and si iii-device 2l which. as seen in Figure l,

that my invention is not liiiiif'cd'to the pre consists of spring, one end of which is rise arrangement and organization or these connected to an arin'ot the bellfcranklever 90 instrunientalities as herein shown and deand the other end oi which is connected to scribed. the key way il.

Figure il represents, in sectional elevia- 22,237 24 and 25 designate lead and re- 40 tion, a floor level stop for electrically op turn lines of the electric circuit which are erated elevators eiiibodyir my invention, connected with the switch and Wlth the 96 the section being taken on une l-l of Fig source of electric energy which operates ure 2. l the elevator car, these conductors' passing Figure 2v represents a section on line 2--2 through the trailer cable 26. The line 22 ofFigiire l. extends to the switch contacts 27 and 28.

Figures 3, 4 and 5 represent diagraininatt The line 23 extends to the switch contacts 100 call Wiring diagrams of myinvention. 29 and 30. The line 24 extendsto the switch y Figure 6 represents a. front elevation of Contact 3l and the line 25 extends. to the a Contact carrying; plate and .its adjiinets switch Contact 32. The controller handle 5 and a portion of the elevator car. is provided 'with a fan-shaped hand 33 which Figure 7 represents a section. on line 77 "forms a selector. 1 105 of Figure 2 and showing in dotted lines the 34 designates a line leading from-the 11ne i L' position certain ofthe contacts assume when 22 to the wall Contact plate 2Q. '3-5p`desi'g' the car stopsabove o'r below the floor level. notes a line leading from the line 25 Vto the iy gli.

binding post 16. 86 designates la line leadswitch, the current passes through the 'cir'-A cuit'.l to cause the elevator car to travel upwardly. When the controller handle is in the running position, the rod 8 willfbe drawn downwardly, thereby causing the Contact carrying plate to be moved out vot' the path off the wall' contact plate 20. AWhen, however, the controller handle of the switch is in lits neutral position, as seen in plate v15 is moved intothe contactl plate 20.

ssuming now that the car should stopabove the floorA level, the contacts. of the binding posts 19 and 18 will close the circuit through the`wall contact plate 2() and the current will pass through the lines 23 and 36 to the binding post 18 and through the lines 24 and 37 to the binding post 19, thence through the wall Contact plate 20 and line '34 tof the line v22. Assuming that the car stops below the Hoor level, then the contacts of the'lower binding posts 16 and `17 vwill plate 20, and the current will pass through the lines 25 and and the lines-23 and 36 1 to thecontac'ts of the binding posts 16 and' 17 respectively and thence through the wall contact'plate 20 and line 34to the vline 22,

- i it is Hush with the floor level.

If the elevator stops above the Hoor level "l contacts 16 and 17 come into contact with the cam 20 which lfives the saine result asV if. the operating handle 5 were in downwf u vised a novel and useful licor level stop for C positionand current conies from the line through the car switch, reversing the mag Current comes from the line 38, see lFigure 8. of-thedrawings., to line thence to 'the `-fcontacts 27 and 28 of the caiswitch. The

I and Line 36 leads by way of rod 23 to. .thfpotentiali switch and causes such po i tential switch to close'.

themdownlmagnet by 'wayof line 25 causj ingthedown magnet to'close, thus allowacts 415,-thence byyway of line 46 tothe @affectent v f 3T designates aline leadingv Figures l, 4'and 5` the contact carrying. path of the wall close the circuit` through the wall contact-l thus causing the car to inove upwardly until' 'current .also passes through line 34 to the' 1 .cam 20L-through contacts 16 and' 17 and lines `When the potentialv fsWit-ch closes, the current' is then allowed to vpassv 'from'- the contact 41 to ContactA 42, and

from contactl 43t'o contact 44, thence to one side of the reversing magnets. Line leads Current l also passes 'troni' contact ii through coiita'ct'48, thence by vtray' ot line f down direction.

lf'the-elevator stops below the iloor level,

'contacts 19 and 18 come into contact wit-li cani 2 O1givin0- "the same results as it the op-y erating handle' were in an up direction. Current comes frointheline through the car switch reversing the magnets-as follows-z The current conies from line 38to line32 thence to contacts 27 and 28 to the car' switch. Currentalso passes fromv line 34 to the cam 2O through 'contacts 19 and 18 and lines`37 and 36. The action of the current by 'way of line 36 to the potential switch isl the saine as already described `with refer ence to the down direction. y

The line 37 leads to 'the up magnet by way of line 24 causing the 'up magnet to 'close and allowing current topass from contacts 42 to 48 thence by way of line 49 to the motor at 50, and then also allows current to )ass from contacts 44 to contacts 45,'thence y way of line 46 to the motor at 47, the

lcurrent being returned to the lineby liiie 39, thus completing the circuit and allow- -ing the motor to. rotate and move the ele- -vator in ali-up direction.

' It will be understood from the foregoing y I y that in accordance with mypresent inven i tion, Al have devised electrically controlled -lneans to automatically bring the .elevator car to the floor level if it should stop above or below such level,I it being understood that the wa'll contact plate 20 may have any desired lehgtli.

The contact carrying plate 15 is mechanically positioned in the path of the wall 'contact plate 2O when the controller handle isiu its neutral or inoperative position. i

lt will now be appa-rent that l have deelectrically` operated elevators, which -embodies the features'ot advantage enumerated "asdesirable in the'stateneent of the invention and the'v .above description, and while l have, in the present instance, shown and v the spirit or scope 'of the invention or sacrificing any of its,v advantages.

It will be seen thatwhen the car stops a 'given distance above the floor levehthe contacts 16 and 17 come into contact with the wall plate 2Q, and if the car stops below the contact with the plate 26, and the circuit is closed the same as would occur by movement lli,

ias

floor level, the contacts 18 and 19. corne into i i operating contacts carrie( 2. In a Idevice ot tlie ciiaracter stated. the;

jcontacts Qi', 29 and 3l.

Having thus described niy invention, what I claim ne and ilesire to secure by Letters Patent, i;

l. In a device ot the cliaracter stated, tbe combination witli tlie elevator car, of elecii c iii' n cans to al( i'. aticii i t call tioil i i umm t ily bringn the car to tlie iloor level wlietlier it-l over-runs or uiuiler-ruiis sucli floor level,

said means incluilino a stationary contact for eacli floor level an plurality ot col by tbe combination with tl'ie elevator car, of a con trolling' switch, and nieans electrically controlled vvlien siaiils itcli is in neutral position to automatically bring; tlie car to tlie floor level Wlietlier it overruns or iinflerruns siicli lioor level, eaifl means including u stationary contact for eacli floor level and a plurality of cooperating contacts cai-rieti by the car.

ln a (levice of tbc cliaractcr stated, tl'ie combination with tlie elevator cai'. of an electric circuit including a controlling;- switch to cilect tlie actuation oi*l saiil car.y and an auxiliary circuit automatically con ti'olled when saiil switch is in neutral position to return tbe cai' to t-lie floor levelA Whether it over-ruiis or under-runs sucli Hoor level, saiil auxiliary circuit incliulinggv :i station contact toi :i floor level anil a plurality oit cooperating' contacts carrieel by tlie cai',

4. In a device oi the character c-'irnbination with tlie i' c..A electric circuit controllingi1 tlie ini saiil car and including;

switcli, aiul an ai. liari circ.v i

aeil .v VAn sin switch autoniatically erin level ii'lietlier it over under-rune suoli lloor le 'i circuit including l L floor level and a nlur tty of cooperating contacts carried b` tlie 5. ln a device o tli-e character Stated, tlie combination with tlie elevator car, if an',` electric circuit to effect the operation o said j car and including a switch, auxiliary circuits including a stationary contact 4for a- Gli floor level andY movable contacts carried by the car. said stationary contactbeingr in the path of tlie movable contacts. and means actuated by said switch to render the movable contacts or' the auxiliary circuits in0p- 65 erative when the switch is in running position and operative Whether the car over!l runs or under-runstlie floor level`r when the switch is in neutral position.

t. ln a device ol' the character stated, the 70 combination ivitli tlie elevator car, of an electric circuit to control tlie travel of tlie car and incluili'nif a switcli, electrically controlled means to automatically bring the car to the floor level Wlietlicr it oven-runs or Iin ler-runs sucli floor level, said means including a stationary contact, and contacts supported to iiiove in unison witli the and to co-operate ivitli said stationary contact, unil nicans controlled by said switch 80.

to render said electrically controlled means operative or inoperative." y "lli'i 'ttl l tttltli i. .n a ferite o .ie chirac ei s a e( e combination with the elevator car and its shaft, of a Wall contact plate carried by said switcli 'to bring it -iiito operative or inop- 90 erative position with respect to said Wall contact plate -caried in said shaft, contacts carried by said lnicniber and included with said Wall contact plate in an auxiliary eircuit controlled by said switch IWhether the car over-runs or under-runs tlie floor level.

ln a {levice ot' t-lie character stated` t-lie combination with the elevator car, eta' contact carrying' plate inovalily carried by said cai, niounteil on saiil plate and includingr a sta tioiiary contact. electric circuits to effect the raising- 5' and lowering of' said car and including; a. manually controlled Iswitch` and con-` nections from said suf'itcli to said contact 105 carrying plate to inove tlie contacts carried bi' naifl plate into the path of said stationary Contact.

EDWARD nt LiiGH.

v lVitiieeses-z .Savin A. LYON, Jr., H. L. Bi'i'iiLAnn.

an electric circuit incliuling contacts 100 

